Design and Experimental Demonstration of a 94-GHz Gyrotron with Complex Cavity Operating at the Second Harmonic

• Published in: Journal of fusion energy Vol. 32; no. 2; pp. 182 - 188
• Main Authors: Liu, Ying-hui, Niu, Xin-jian, Yu, Sheng, Li, Hong-fu, Rao, Jun, Zhou, Jun, Lei, Chaojun, Jiang, Hong, Yang, Yi
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.04.2013; Springer; Springer Nature B.V
• Subjects: Beam interactions; Beams (radiation); Computer simulation; Cyclotron resonance devices; Design; Design engineering; Efficiency; Electric potential; Electron beams; Electrons; Energy Systems; Experiments; Gyrotrons; Holes; Magnetic fields; Microwave devices; Nuclear Energy; Nuclear Fusion; Numerical analysis; Original Research; Physics; Physics and Astronomy; Plasma; Plasma Physics; Power; Self consistent fields; Simulation; Superconductors; Sustainable Development; Voltage; Numerical simulation; Experimental study; Second harmonic; Complex cavity; 94-GHz gyrotron
• ISSN: 0164-0313; 1572-9591
• DOI: 10.1007/s10894-012-9546-0

A systematic theoretical and experimental study on 94-GHz second-harmonic gyrotron with a superconducting magnet system is presented in this paper. A complex cavity with gradual transition is employed in the gyrotron. A self-consistent field nonlinear theory is used and numerical simulation results for electron beam interaction with TE 02 –TE 03 modes are given. A pulse output power of 235.2 kW is obtained by simulation at a beam voltage of 60 kV with beam current of 10 A and magnetic field 17 kG, corresponding to an efficiency of 39.2 %.